Take the 2-minute tour ×
Geographic Information Systems Stack Exchange is a question and answer site for cartographers, geographers and GIS professionals. It's 100% free, no registration required.

I am trying to add map tiles as raster files in QGIS but when I add them they all appear on top of each other. I did this once before and everything was ok but I am now unable to find how to get the tiles showing as one map. I am using OS Streetview. Thanks in advance for your help. Martin

share|improve this question
add comment

1 Answer

If you have just downloaded OS StreetView, note that files comes in two folders, 'georeferencing files' and 'SN' (or other index). This means that for whatever reasons OS decided to keep georeferencing information separate from maps.

Before loading maps in QGIS, you need to move TFW files from 'georeferencing' into 'sn' folder.

To check if QGIS recognized georeferencing information, use Raster\Miscellaneous\Information for the map you've added.

Raster without georeferencing info will show this:

no georeferencing

share|improve this answer
    
The data was downloaded as a zip file and the folder shows tif files and tfw files. There are no other folders in it. I'm sure when I did this before I just used the tif files and everything was fine but cannot work out what/if I am doing anything different. –  martin Apr 1 '12 at 7:21
    
Just to add the files were downloaded from Digimap if that makes a difference –  martin Apr 1 '12 at 7:24
    
I guess it does. My answer was using data downloaded from OS at www.ordnancesurvey.co.uk/products/os-streetview/index.html Please add one of the maps and check was Information says are there coordinates or only pixels like in example above? –  Maxim Dubinin Apr 1 '12 at 8:50
    
I downloaded from OS and problem now solved. Thanks very much for your help. Much appreciated. –  martin Apr 1 '12 at 10:15
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.